-er -ey a-a a-b a-t aaa aab aae aak aan aar aat aay ab- aba abb abe abk abn abr abt aby aea aeb aee aek aen aer aet aey aka akb ake akk akn akr an- ana anb ane ank ann anr ant any ar- ara arb are ark arn arr art ary at- ata atb ate atn atr att ay- aya aye ayk ayn ayr ayt baa bab bae bak ban bar bat bay bba bbb bbe bbk bbn bbr bbt bby be- bea beb bee bek ben ber bet bey bka bkb bke bkk bkn bkr bkt bna bnb bne bnk bnn bnr bnt bra brb bre brk brn brr brt bry bta btb bte btk btn btr btt bty by- bya bye byk byn byr byt eaa eab eae eak ean ear eat eba ebb ebe ebk ebn ebr ebt eby eea eeb eee eek een eer eet eey eka ekb eke ekr ekt eky en- ena enb ene enk enn enr ent eny era erb ere erk ern err ert ery eta etb ete etk etn etr ett ety eya eye eyn eyr eyt k-t ka- kaa kab kae kak kan kar kat kay kba kbb kbe kbk kbn kbr ke- kea keb kee kek ken ker ket key kkb kke kkk kkn kkr kkt kky kn- kna kne knk knn knr knt kra krk krn krr krt kry kta ktb kte ktk ktn ktr ktt kya kye kyn kyr kyt naa nab nae nak nan nar nat nay nba nbb nbe nbk nbn nbr nbt ne- nea neb nee nek nen ner net ney nka nke nkk nkn nkr nkt nky nna nnb nne nnk nnn nnt nra nrb nre nrk nrn nrr nrt nry nta ntb nte ntk ntn ntr ntt nya nye nyk nyn nyt nyy ra- raa rab rae rak ran rar rat ray rba rbb rbe rbk rbn rbr rbt re- rea reb ree rek ren rer ret rey rkb rke rkk rkt rky rna rnb rnn rnr rnt rny rra rrb rrk rrn rrr rrt rta rtb rte rtk rtn rtr rtt rty ry- rya rye ryk ryn ryr ryy taa tab tae tak tan tar tat tay tba tbb tbe tbk tbn tbr tbt te- tea teb tee tek ten ter tet tey tka tkb tke tkk tkr tkt tky tna tnb tne tnk tnn tnr tnt tra trb tre trk trn trr trt try tta ttb tte ttk ttn ttr ttt tty tya tye tyn tyr tyt yaa yab yae yak yan yar yat yay ybe ybr yby yea yeb yee yek yen yer yet yey yka ykk ykn yna yne ynk ynn yny yra yre yrn yrt yta yte ytk ytn ytr ytt yyb yye yyt yyy